One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(9,10)(11,14)(12,16)(13,19)(15,17)(18,22)(20,23)(21,24) involution — undirected(1,3)(2,5)(4,8)(6,7)(9,10)(11,13)(12,18)(14,19)(15,17)(16,22)(20,24)(21,23) involution — undirected(3,8)(5,7)(9,11,13,10,15,19,14,17)(12,18,21,16,20,24,22,23)(2,6)(5,7)(12,20)(16,23)(18,24)(21,22) involution — undirected(9,12,13,21,15,20,14,22)(10,16,19,24,17,23,11,18)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.